Cylinder for threshing-machines.



Patented Oct. 2, I900.

(Application filed-Oct. 26, 1898.)

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W. H. & J. BUTTERWORTH.

b r k CYLINDER FOB THRESHING MACHINES.

(No Model.)

N TORJ 0% m: Norms PEYERS 00 PHOTD-L|THO., WASHINDTON. n. c,

UNITED STATES PATENT GFFICE.

WILLIAM H. BUTTERWORTH AND JOHN BUTTERYVORTI-I, OF TRENTON, NEW JERSEY.

CYLINDER FOR THRESHlNG-MACHINES.

SPECIFICATION forming part of Letters Batent N 0. 659.132. dated October 2. 1900 Application filed October 25, 1898. Serial No. 694,518. LNo model.)

To all whom it may concern:

Be it known that we, WILLIAM H. BUTTER- WORTH and JOHN BUTTERWORTH, citizens of the United States, residing at Trenton, in the county of'Mercer and State of New Jersey, have invented certain new and useful Improvements in Cylinders for Threshing-Machines; and we do hereby declare the following to he a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use thesame.

This invention relates to the cylinders of threshing-machines which are very long and which are provided with rubbing-plates instead of teeth.

This invention consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the drawings, Figure 1 is a longitudinal section through the cylinder. Fig. 2 is a cross-section through the cylinder, taken on the line 00 0c in Fig. 1 and drawn to a larger scale. Fig. 3 is a detail plan view of portions of one of the heads and one of the rubbingplates. Fig. 4 is a plan view of one of the yokes.

A is the cylinder-shaft, and B are heads secured on it in anyapproved manner. The middle head B is provided with two peripheral flanges b, which project one on each side, and the remaining heads are each provided with a single peripheral flange b. The flanges b project away from the middle head, those on one side projecting in one direction andthose on the other side in the opposite direction. All the flanges b and b are provided with longitudinally-arranged slots at.

0 represents connections, such as yokes or links, bearing on the periphery of the middle head B.

0 represents inclined truss-rods, which engage with the end portions of the yokes. The truss-rods pass through holes in the other heads and are provided with screw-threaded end portions 0 and nuts 0, which bear against the end heads near their hubs. The trussrods engage with the yokes in any approved manner. For instance, the rods may have hooks which engage with the end portions of the yokes, as shown in the upper part of Fig.

[1-, or they may have heads, as shown in thelower part of Fig. l, the end portions of the yokes being provided with lugs for engaging with the said heads. When links or-yokes are used, the rods 0 can be placed in position after all the heads have been rigidly secured to the shaft, and any one rod 0' can be removed if not satisfactory without unkeying any of the heads, which would not be possible if the rods 0' were continuous truss-rods.

The truss-rods are tightened up by means of the nuts 0, so as to make the shaft and heads run true before the rubbing-plates are secured in position. v

D represents the rubbing-plates, provided with diagonal ribs d on their faces. In order to increase the efficiency of the rubbing-faces, the ribs cl are provided with notches or serrations d on their edges. The rubbing-plates extend from one end of the cylinder to the other, and in order to facilitate their attachment and removal each. plate is made in two or more parts or sections, which are arranged end to end. Each rubbing plate or section has two flanges e on its under side, which rest on the peripheries of the heads, and in order to strengthen the plates the flanges e are made deeper at e between the heads. The flanges preferably taper from the points 6, midway between the heads, to the points where they come in contact with the heads.

E represents bolts for securing the rubbingplates to the heads. These bolts pass through holes in the plates D and through the slots at.

The rubbing-plates are usually formed of cast malleable iron, and the bolt-holes are cast in them. The plates D shrink unequallyin the process of manufacture, and the longitudinal arrangement of the slots a insures a passage for each bolt E when pushed through its bolthole. The rubbing-plates can readily be removed by slackening the nuts on the bolts E and sliding the plates longitudinally until the bolts are clear of the slots in the heads. The bolts which secure the rubbing-plates to the middle head pass between the bars of the yokes orlinks, and the flanges of the rubbing-plates straddle the said yokes or links.

Threshing-cylinders made according to this invention are extremely light and strong, and the deepened flanges prevent the portions of the rubbing-plates between the heads from springing outward by centrifugal force when the cylinder is revolved rapidly.

Vhat we claim is 1. In a threshing-cylinder, the combination, with a shaft, and heads secured thereon; of connections bearing on the middle head, inclined truss-rods engaging with the end portions of the said connections and connected to the end heads, and rubbing-plates carried by the said heads, substantially as set forth.

2. In a threshing-cylinder, the combination, with a shaft, and heads secured thereon; of connections bearing on the middle head, inclined truss-rods connecting the said connections with the end heads, and rubbingplates secured to the said heads in sections arranged end to end, said plates being provided on their under surfaces with stiffening-flanges which bear on the said heads and which straddle the said connections, substantially as set forth.

3. In a threshing-cylinder, the combination, with a shaft, and heads secured thereon and provided with peripheral flanges having longitudinal slots a; of rubbing-plates each provided with holes and having two flanges which rest on the said peripheral flanges, and bolts passing through the said holes and slots and between the said flanges of the rubbingplates, said plates and bolts being slidable together lengthwise of the cylinder when the nuts on the bolts are partially unscrewed, substantially as set forth.

4. In a threshing-cylinder, the combination, with a shaft, and heads secured thereon and provided with peripheral flanges having longitudinal slots 0/; of rubbing-plates formed in sections arranged end to end and provided with holes, said sections being slidable longitudinallyin opposite directions,and bolts passing through the said holes and slots and normally securing the said sections in position, substantially as set forth.

In testimony whereof We afiix our signatures in presence of two witnesses.

WILLIAM H. BUTTERWORTH. JOHN BUTTERWORTH. Witnesses:

JOSEPH A. GRUEssER, WALTER K. BOWNE. 

